require 5;
package Pod::Perldoc::GetOptsOO;
use strict;

# Rather like Getopt::Std's getopts
# Call Pod::Perldoc::GetOptsOO::getopts($object, \@ARGV, $truth)
# Given -n, if there's a opt_n_with, it'll call $object->opt_n_with( ARGUMENT )
# (e.g., "-n foo" => $object->opt_n_with('foo'). Ditto "-nfoo")
# Otherwise (given -n) if there's an opt_n, we'll call it $object->opt_n($truth)
# (Truth defaults to 1)
# Otherwise we try calling $object->handle_unknown_option('n')
# (and we increment the error count by the return value of it)
# If there's no handle_unknown_option, then we just warn, and then increment
# the error counter
#
# The return value of Pod::Perldoc::GetOptsOO::getopts is true if no errors,
# otherwise it's false.
#
## [email protected] 2002-10-31

BEGIN { # Make a DEBUG constant ASAP
*DEBUG = defined( &Pod::Perldoc::DEBUG )
? \&Pod::Perldoc::DEBUG
: sub(){10};
}


sub getopts {
my($target, $args, $truth) = @_;

$args ||= \@ARGV;

$target->aside(
"Starting switch processing. Scanning arguments [@$args]\n"
) if $target->can('aside');

return unless @$args;

$truth = 1 unless @_ > 2;

DEBUG > 3 and print " Truth is $truth\n";


my $error_count = 0;

while( @$args and ($_ = $args->[0]) =~ m/^-(.)(.*)/s ) {
my($first,$rest) = ($1,$2);
if ($_ eq '--') { # early exit if "--"
shift @$args;
last;
}
my $method = "opt_${first}_with";
if( $target->can($method) ) { # it's argumental
if($rest eq '') { # like -f bar
shift @$args;
warn "Option $first needs a following argument!\n" unless @$args;
$rest = shift @$args;
} else { # like -fbar (== -f bar)
shift @$args;
}

DEBUG > 3 and print " $method => $rest\n";
$target->$method( $rest );

# Otherwise, it's not argumental...
} else {

if( $target->can( $method = "opt_$first" ) ) {
DEBUG > 3 and print " $method is true ($truth)\n";
$target->$method( $truth );

# Otherwise it's an unknown option...

} elsif( $target->can('handle_unknown_option') ) {
DEBUG > 3
and print " calling handle_unknown_option('$first')\n";

$error_count += (
$target->handle_unknown_option( $first ) || 0
);

} else {
++$error_count;
warn "Unknown option: $first\n";
}

if($rest eq '') { # like -f
shift @$args
} else { # like -fbar (== -f -bar )
DEBUG > 2 and print " Setting args->[0] to \"-$rest\"\n";
$args->[0] = "-$rest";
}
}
}


$target->aside(
"Ending switch processing. Args are [@$args] with $error_count errors.\n"
) if $target->can('aside');

$error_count == 0;
}

1;